Improvement in grain-bins



0; JOHNSON.

Grain-Bin.

I N 0. 21 ,033. Patented July 29,1879.

AZZ S'Z: fnvenzor:

NPETERS. PNOTO-LITHOGRAPHER, WASHINGTON, D Cv UNITED A STATES PATENTOEEIoE ORANGE JOHNSON, OF GRAND LEDGE, MICHIGAN.

IMPROVEMENT IN GRAIN-BINS.

Specification forming part of Letters Patent No- 218,033, dated July 29,1879; application filed March 4, 1879.

To all whom it may concern:

Be it known that I, ORANGE J oHNsoN, of Grand Ledge,in the county ofEaton and State of Michigan, have invented an Improvement in Grain-Bins,of which the following is a specification.

The nature of this invention relates to new and useful improvements inthe construction of grain-bins; and the invention consists in providingthe bins with perforated false bottoms, and with air-chambers below suchfalse bottoms, in combination with a double-acting air-pump or bellowsconnected with such airchambers, for forcing fresh air up through thegrain or drawing the foul air out of the bins to ventilate the gram andascertain the condition; and, further, in the combination, with agrain-bin, of double-actin g air-pump or bellows having a slidingport-plate and a flexible pipe connecting the slidingport-plate with thesystem of pipes leading to the grain-bins, so that such system of pipecan be put iuconnection with either the inlet oroutlet port of the pumpor bellows, as fully hereinafter explained.

Figure 1 is a perspective view, and Fig. 2is a central vertical section.

In the accompanying drawings, which form a part of this specification, Arepresents a grain-bin provided with the usual spouts for discharge.

In the bottom of the bin I construct a false bottom, B, which is finelyperforated with small holes. In the bottom of the bins, and through thesame, I pass air-pipes G, which are provided with stop-cocks D. Thesepipes O are connected with a main air-pipe, E, which in turn isconnected witha bellows or air-pump, as is more fully hereinafter setforth. a

F represents an air-chamber, divided into two compartments by thepartition (1. In one of these compartments there are arranged the valvesb, which open inwardly, while the other compartment is provided withvalves which open outwardly.

G is a rod which passes through a proper stuffingbox in the chamber F,and has secured to it two heads, I. A drum of leather is secured at oneend to each of the heads I, the opposite ends being secured to the sidesof the chamber F.

In the top of the air-chamber are two openings, d, which are covered ordisclosed by the sliding connecting-block J, which is connected by meansof a flexible pipe, K, to the main airpipe E.

By this construction I have an exhaust or suction bellows, and I canforce a current of fresh air up through the grain contained in the bins,or I can draw the air down through the same and exhaust at the bellows,at which point it is easy to ascertain whether the grain is molding orbecoming heated.

What I claim as my invention is- 1. The combination, with a grain-binhaving a perforated false bottom and an air-chamber below such falsebottom, of a double-acting air-pump or bellows connected with suchair-chamber, whereby fresh air can be forced into said grain-bins upthrough the grain, .or the foul air drawn out of such bins, to ventilatethe grain and ascertain its condition, substantially as described.

2. The combination, with a grainbin, of the air-pump or bellows havingports (1 and sliding port-plate J, and the flexible pipe K, connectingthe port-plate with air-pipes leading to the grain-bin, constructed andarranged substantially as and for the purpose set forth.

ORANGE JOHNSON.

Witnesses:

H. S. SPEAGUE, CHAS. J. HUNT.

